Answer asap and me understand how to solve this. the path traveled by a roller coaster is modelled by the equation y=27sin13x+30 where y is measured in meters. what is the number of meters in the maximum altitude of the roller coaster? a.) 13 b.) 27 c.)30 d.) 57

Which expression can be used to determine the slope of the line that passes through the points -6, three and one, -9

When a rectangle is dilated, how do the perimeter and area of the rectangle change?

1. according to the internal revenue service, the mean tax refund for the year 2007 was $2,708. assume the standard deviation is $650 and that the amounts refunded follow a normal probability distribution. a. what percent of the refunds are more than $3,000? b. what percent of the refunds are more than $3,000 but less than $4,000? c. what percent of the refunds are less than $2,000?